Type of Puzzle:
You must have unique numbers 1 through 9 in each row, column and region.
You must also have unique numbers 1 through 9 in the two diagonals running
from corner to corner.
Double-click on the border between cells to turn the wide border on or off
to change the shapes of the regions.
When printing the page you may need to turn on the option
to print the background or background images.
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No claim is made on the Sudoku puzzle and/or solution
displayed on this web page.